http://ca.news.yahoo.com/bill-gates-kicks-off-search-toilet-future-233951796.html So far, others figured out how to make them: create electricity, gas, or charcoal; process clean water, or mineral extraction as well as sanitization. Significant cash prizes and monetary backing available.. Forget Mac & PC.. Windows and OSX.. a significant change in waste management would have global impact in a way very few tools do. So, you have a good idea? Video of some of the finalists: http://www.theglobeandmail.com/news/news-video/video-bill-gates-wants-to-build-a-better-toilet/article4482213/?cmpid=rss1 The Gates Foundation is giving $370M + Ongoing investment capital to help find the right idea.